Honestly, this boss isn't very hard. But it was pretty fun! Sandman uses several attacks from other bosses for phase 1, so just repeat the same actions to dodge them.
Phase 2 ( Nightmare ) however is a bit more tricky. Remember that the screen is looped from bottom to top and left to right. Use this fact to more easily dodge some of his attacks. As for the black lasers, there is a very little tell and almost no time to react so feel free to practice a few times. Lastly, don't forget you can farm Ifrit and Ravenlord to blow this boss away!
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